| A | B |
| dynamo | power |
| thermodynamics | power created by heat |
| dynamite | an explosive with power |
| dyne | unit of measure of power |
| therm | heat |
| thermal | having the ability to keep heat (like a coat) |
| thermostat | the instrument that keeps heat the same |
| meter | measure |
| meter | a measure of length |
| metronome | an instrument to measure time |
| cyclometer | measures RPM’s |
| gram | written/drawn |
| diagram | a drawing |
| program | writing given before an event to explain it |
| cardiogram | drawing of the heartbeat patterns |
| mono | one (1). |
| monologue | a speech by one person |
| monarchy | ruled by one person (a monarch) |
| monomania | madness for one thing |
| micro | small |
| microbiology | the study of small living things |
| microscope | a tool in science to see small things |
| micrometer | a tool that measures small things |
| microwave | an oven that cooks with short light waves |
| microgrooves | the small lines on a CD |
| multi | many |
| multimedia | using more than one media |
| multi-tasking | doing more than one thing at the time |
| multicolored | having many colors |
| multiple | many numbers |
| multilingual | knowing many languages |
| deci | ten (10) |
| decimeter | 1/10 of a meter |
| decimal | in math |
| decimate | to destroy a group |
| decathlon | 10 events |
| decade | 10 years |
| baro | weight |
| barometer | measure the weight of air pressure |
| isobar | lines to show areas of equal pressure on a weather map |
| baritone | voice in the middle lower range |
| hydro | water |
| dehydrate | to take away water |
| hydrate | to fill with water |
| hydrometer | a tool to measure water |
| hydrophobia | fear of water |
| hydroplane | to slide on a thin layer of water |
| hydrolysis | to decompose with water |
| hydroelectric | electricity created by water |
| milli | thousand or thousandth |
| million | one thousand thousands 1 |
| millennium | a period of 1 |
| millimeter | 1/1 |
| cent | 100 |
| centimeter | 1/100 of a meter |
| century | 100 years |
| centennial | 100 year celebration |
| cent | 1/100 of a dollar |